These are just a few of the before-they-were-stars photos included in Ancestry.com’s U.S. School Yearbook Collection. The genealogy website recently expanded its yearbook database to include nearly 7 million images from thousands of schools in the United States.

The database is designed to provide insight into family members’ school years, says Ancestry.com executive vice president Josh Hanna, “and while you’re searching, you might just find a famous classmate.”

Among the celebrities included in the expanded database are Jon Stewart, LeBron James, Justin Timberlake, Gwyneth Paltrow, George Clooney, Will Ferrell and Sean Penn, sporting shaggy locks like his Jeff Spicoli character from 1982’s “Fast Times at Ridgemont High.”

The expanded U.S. Yearbook Collection will be available beginning Wednesday.